Placing these scripts in prims will cause those prims to light up and blink when turning the vehicle in the specified left or right direction.

In SL, light attributes affect an entire prim face, and sculpted prims are comprised of a single face, so unfortunately you cannot use these in sculpted prims combining multiple light surfaces. Short story is, these require a prim each to function properly, but by using Over 32 Prim Mode this isn't as big of a deal as it used to be.